CN103047750A - Instant high-frequency vortexing type electric water heater - Google Patents

Instant high-frequency vortexing type electric water heater Download PDF

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Publication number
CN103047750A
CN103047750A CN2013100254130A CN201310025413A CN103047750A CN 103047750 A CN103047750 A CN 103047750A CN 2013100254130 A CN2013100254130 A CN 2013100254130A CN 201310025413 A CN201310025413 A CN 201310025413A CN 103047750 A CN103047750 A CN 103047750A
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circuit
frequency
chip microcomputer
heating
type electric
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CN2013100254130A
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CN103047750B (en
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陈文芗
朱维龙
严泳兴
侯磊
单晓宇
陈忠祥
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XIAMEN GOOMAX ENERGY TECHNOLOGY Co.,Ltd.
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Xiamen University
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Abstract

The invention relates to an instant high-frequency vortexing type electric water heater and relates to an electric water heater. The instant high-frequency vortexing type electric water heater has the characteristics of rapid heating, high efficiency, high security, environmental friendliness and the like. The instant high-frequency vortexing type electric water heater is provided with a heating water groove, a power driving circuit and a control unit, wherein the heating water groove is provided with a groove body, a heating plate and an excitation coil, the groove body is provided with a water inlet an d a water outlet, the heating plate is arranged in the groove body, and the excitation coil is wound on the groove body; a control signal output end of the control unit is connected with a control end of the power driving circuit, and a PWM (pulse-width modulation) signal output end of the power driving circuit is connected with the excitation coil so as to generate an alternating magnetic field; and the power driving circuit can be provided with a power supply module, a driving circuit and a full bridge high-frequency inversion circuit, and the control unit is provided with an over-voltage protection circuit, a singlechip, a temperature detection circuit, an over-current protection circuit, a keyboard and a liquid crystal display.

Description

Immediate heating type high-frequency eddy current type electric heater
Technical field
The present invention relates to a kind of electric heater, particularly relate to a kind of immediate heating type high-frequency eddy current type electric heater.
Background technology
At present, mainly there are on the market following 3 kinds of water heaters: gas heater, solar water heater and storage-type electric water heater.Gas heater is because of its potential safety hazard and the more and more higher use cost water heater market of just progressively fading out.Solar water heater strictly is subjected to the impact of weather, weather and mounting condition because of it, so that it is difficult to occupy the larger market share.Storage-type electric water heater is long owing to bulky, preheating time, the not high reason of heat utility ratio, also has been not suitable with the rhythm of the modern life.
Chinese patent CN1626986 discloses a kind of waterpipe type washing shower electric heater, comprise the control circuit that contains the high-frequency resonant coil, one section material is the strong irony of high-frequency vortex fuel factor or stainless steel waterpipe, this water pipe water inlet water flowing pond, delivery port is connected to tap, and it is on high-frequency vortex the fuel factor strong irony or stainless steel waterpipe that described high-frequency resonant coil is enclosed within described one section material; The Water flow impact type noncontacting switch is that the strong irony of high-frequency vortex fuel factor or stainless steel waterpipe serial connection communicate with described one section material, the housing of Water flow impact type noncontacting switch uses the material manufacturing to the unshielded effect in magnetic field, adopts the described mains supply that contains the control circuit of high-frequency resonant coil of Water flow impact type noncontacting switch control.The advantage of the clean non-pollutant discharge of the existing common electrical water heater of this water heater, have again gas heater to fetch boiling water strong point that tap a little while must hot water uses, volume is little, and energy conversion efficiency is high, and is easy to operate.
Summary of the invention
The objective of the invention is the deficiency that exists in the existing water heater, a kind of immediate heating type high-frequency eddy current type electric heaters fast, the characteristics such as efficient is high, safe, environmental protection that heat are provided.
The present invention is provided with heating water tank, power driving circuit and control module; Described heating water tank is provided with cell body, heating plate and magnet exciting coil, and cell body is provided with water inlet and delivery port, and heating plate is located in the cell body, and magnet exciting coil is wrapped in the cell body outside; The control signal output termination power driving circuit control end of described control module, the pulsewidth of power driving circuit is adjustable, and pwm signal is exported the termination magnet exciting coil to produce alternating magnetic field.
Described power driving circuit can be provided with power module, drive circuit and full-bridge high-frequency inverter circuit (IGBT), and described control module is provided with overvoltage crowbar, single-chip microcomputer, temperature sensing circuit, current foldback circuit, keyboard and liquid crystal display; Described power module outlet respectively with the full-bridge high-frequency inverter circuit; drive circuit; overvoltage crowbar and single-chip microcomputer are electrically connected; the pulsewidth of drive circuit is adjustable, and pwm signal is exported the input of termination full-bridge high-frequency inverter circuit; the output of full-bridge high-frequency inverter circuit connects respectively magnet exciting coil and temperature sensing circuit; drive circuit is connected with single-chip microcomputer; the output of overvoltage crowbar connects the input port of single-chip microcomputer; the output of temperature sensing circuit and current foldback circuit connects respectively the input port of single-chip microcomputer; the output of keyboard is connected with the input port of single-chip microcomputer; the input of current foldback circuit is connected with magnet exciting coil, and the output port of single-chip microcomputer is connected with the input of liquid crystal display.
Described drive circuit can adopt the PWM drive circuit, and its model can adopt the UC3846 type.
Described single-chip microcomputer can adopt AVR single-chip microcomputer Mega16L.
When the magnetic line of force of alternating magnetic field passes the heating plate of high magnetic permeability, produce immediately vortex heat, make voluntarily at a high speed heating of heating plate itself, make the water in the heating water tank obtain heating; Described magnet exciting coil is comprised of fine copper, is mainly used in the excitation effect.
The about 300V direct current of rectification output is supplied with the full-bridge high-frequency inverter circuit to described power module respectively, the 5V direct current is for single-chip microcomputer work and provide the 24V direct current for the PWM drive circuit works.
The adjustable pwm signal of described PWM drive circuit output pulse width, and then control output voltage (electric current) size are finally regulated temperature.
Described full-bridge high-frequency inverter circuit (IGBT) is realized invert function, changes DC voltage into the high-frequency ac square-wave signal.
Described AVR single-chip microcomputer Mega16L is a cyclelog, carries out the various programme-control of whole current vortex water heater and stores corresponding data.
The present invention adopts current foldback circuit, overvoltage crowbar and temperature sensing circuit to form and detects and holding circuit, is used for the protection to system.
The present invention is based on electromagnetic heating method, adopt high-frequency I GBT inversion transformation technique, under programme controlled coordination control action, make the IGBT device produce the alternating current of high frequency, the magnetic field energy of alternation, thereby the water in the cartridge heater.Has following features: 1. owing to adopt the magnetic field of high-frequency alternating in metallic object, to produce vortex flow, the metallic object heating is heated to water, because heating surface (area) (HS becomes large, firing rate is accelerated again.The mode electrothermal efficiency of Electromagnetic Heating is high simultaneously, and electrothermal efficiency can reach 90%.2. the mode of this Electromagnetic Heating has realized completely electricity separation, has strengthened the security performance of water heater.3. volume is little, and floor space is few, is easy to install, moves, safeguards.
The present invention has used for reference electromagentic furnace technology, the electromagnetic eddy heating technique is applied to water heater, because heating collar itself does not generate heat in the Electromagnetic Heating, and be to adopt insulating materials and high-temperature cable manufacturing, the resistance wire that does not therefore have a former electric heating coil oxidation and problem of reduction of service life under the condition of high temperature.Have long service life, heating rate fast, the advantage such as need not keep in repair, reduced maintenance time, reduced cost.Reliable, many closed loops intelligence control system and perfect protection system, assurance equipment long-term safety is moved reliably.Immediate heating type high-frequency eddy current type electric heater produces 20~40KHz high frequency electric by pulse length modulation principle and high frequency switch power and flows through drive coil, in metallic object, produce eddy current, heating of metal, the metal material indoor design has suitable current to pass through, be heated when water flows through metallic plate, thereby obtain endlessly hot water.
The present invention is not because shifting to an earlier date preheating, so the thermal energy when not having preheating is lost, and heat time heating time is shorter, wants power saving 30%~50% than conventional water heaters.In addition, because the present invention do not need bulky inner bag water storage tank and heat-insulation layer, so small product size is small and exquisite, outward appearance fashion, weight are also low weight, can greatly save usage space, more meets modern consumer to the requirement of household appliances.
Description of drawings
Fig. 1 is the structure composition frame chart of the embodiment of the invention.
Fig. 2 is the principle schematic of the embodiment of the invention.
Fig. 3 is the full-bridge high-frequency inverter circuit schematic diagram of the embodiment of the invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Referring to Fig. 1 and 2, the embodiment of the invention is provided with heating water tank, power driving circuit 2 and control module 3; Described heating water tank is provided with cell body 11, heating plate 12 and magnet exciting coil 13, and cell body 11 is provided with water inlet 111 and delivery port 112, and heating plate 12 is located in the cell body 11, and magnet exciting coil 13 is wrapped in cell body 11 outsides; The control signal output termination power driving circuit control end of described control module 3, the pulsewidth of power driving circuit is adjustable, and pwm signal is exported termination magnet exciting coil 13 to produce alternating magnetic field.
Described power driving circuit is provided with power module 21, drive circuit 23 and full-bridge high-frequency inverter circuit (IGBT) 22, and described control module 3 is provided with overvoltage crowbar 31, single-chip microcomputer 32, temperature sensing circuit 33, current foldback circuit 34, keyboard 35 and liquid crystal display 36; Described power module 21 outputs respectively with full-bridge high-frequency inverter circuit 22; drive circuit 23; overvoltage crowbar 31 and single-chip microcomputer 32 are electrically connected; the pulsewidth of drive circuit 23 is adjustable, and pwm signal is exported the input of termination full-bridge high-frequency inverter circuit 22; the output of full-bridge high-frequency inverter circuit 22 connects respectively magnet exciting coil 13 and temperature sensing circuit 33; drive circuit 23 is connected with single-chip microcomputer 32; the output of overvoltage crowbar 31 connects the input port of single-chip microcomputer 32; the output of temperature sensing circuit 33 and current foldback circuit 34 connects respectively the input port of single-chip microcomputer 32; the output of keyboard 35 is connected with the input port of single-chip microcomputer 32; the input of current foldback circuit 34 is connected with magnet exciting coil 13, and the output port of single-chip microcomputer 32 is connected with the input of liquid crystal display 36.
Described drive circuit adopts the PWM drive circuit, and its model can adopt the UC3846 type.Described single-chip microcomputer adopts AVR single-chip microcomputer Mega16L.
During work, water is entered by water inlet 111, come the regulating pondage size by control valve, when water flows through heating plate 12, power driving circuit drives magnet exciting coil 13 and produces magnetic field simultaneously, when the magnetic line of force of alternating magnetic field passes the heating plate 12 of high magnetic permeability, produces immediately vortex heat, heating plate 12 itself is generated heat at a high speed voluntarily, make the water in the heating water tank obtain heating.Because current continually, thereby obtain endlessly hot water.
Referring to Fig. 3, during work, 220V alternating current process D1, D2, D3 obtains about 300V direct current behind D4 and the C1 rectifying and wave-filtering, offer the full-bridge high-frequency inverter circuit.The PWM drive circuit adopts current control mode pulse width modulator, and pulse width modulator receives the given signal of single-chip microcomputer, output two-way (PWM1, PWM2) Dead Time and the adjustable pwm signal of pulsewidth.After one road PWM1 comes, make two switching tube IGBT1 and the simultaneously conducting of IGBT2 at full-bridge high-frequency inverter circuit (IGBT) diagonal angle, rear one road PWM2 pulse is come, remaining a pair of IGBT pipe IGBT3 and IGBT4 conducting, so that 4 IGBT pipe alternate conduction convert DC voltage to the ac square wave signal.The electric current that changes at a high speed flows through coil and produces the high speed changing magnetic field, when the magnetic line of force in the magnetic field passes through metal heater plate, produce countless little eddy current in metallic object, eddy current makes the free electron of heating plate be the alternate motion of whirlpool shape, by electric current Joule heat (P=I 2* R) heating plate is generated heat, thus realize the heating to water.
Single-chip microcomputer is carried corresponding control signal for the control pulse-width modulation circuit, receive simultaneously and process the detection signal that feeds back, according to signal magnitude, judge present temperature drift or on the low side, the control signal that then improves on the low side, and then improve the PWM dutycycle, and then drive the IGBT circuit, output temperature is raise; The higher control signal that then reduces reduces the PWM dutycycle, and output temperature is reduced.
Holding circuit of the present invention mainly contains overvoltage crowbar, current foldback circuit, temperature sensing circuit.Overvoltage crowbar is used for single phase alternating current power supply through rectification, dividing potential drop, obtains and the proportional low-voltage dc signal of magnitude of voltage, and the input single-chip microcomputer is realized the overvoltage protection to input voltage.Current foldback circuit is to utilize current transformer that the large electric current of the alternation in the bridge circuit is converted into the little electric current of corresponding frequencies, sends current signal back to the control pulse-width modulation circuit and process after rectification, delivers in the single-chip microcomputer at last and adjusts.
Need among the present invention the object of its temperature detection is mainly contained IGBT power tube and water temperature, so need temperature sensing circuit.In temperature sensing circuit, the present invention adopts digital temperature sensing DS18B20 to finish detection to IGBT pipe and water temperature, and the reaction temperature by the enforcement of DS18B20 circuit feeds back to single-chip microcomputer, and shows at liquid crystal display.

Claims (5)

1. immediate heating type high-frequency eddy current type electric heater is characterized in that being provided with heating water tank, power driving circuit and control module; Described heating water tank is provided with cell body, heating plate and magnet exciting coil, and cell body is provided with water inlet and delivery port, and heating plate is located in the cell body, and magnet exciting coil is wrapped in the cell body outside; The control signal output termination power driving circuit control end of described control module, the pulsewidth of power driving circuit is adjustable, and pwm signal is exported the termination magnet exciting coil to produce alternating magnetic field.
2. immediate heating type high-frequency eddy current type electric heater as claimed in claim 1, it is characterized in that described power driving circuit is provided with power module, drive circuit and full-bridge high-frequency inverter circuit, described control module is provided with overvoltage crowbar, single-chip microcomputer, temperature sensing circuit, current foldback circuit, keyboard and liquid crystal display; Described power module outlet respectively with the full-bridge high-frequency inverter circuit; drive circuit; overvoltage crowbar and single-chip microcomputer are electrically connected; the pulsewidth of drive circuit is adjustable, and pwm signal is exported the input of termination full-bridge high-frequency inverter circuit; the output of full-bridge high-frequency inverter circuit connects respectively magnet exciting coil and temperature sensing circuit; drive circuit is connected with single-chip microcomputer; the output of overvoltage crowbar connects the input port of single-chip microcomputer; the output of temperature sensing circuit and current foldback circuit connects respectively the input port of single-chip microcomputer; the output of keyboard is connected with the input port of single-chip microcomputer; the input of current foldback circuit is connected with magnet exciting coil, and the output port of single-chip microcomputer is connected with the input of liquid crystal display.
3. immediate heating type high-frequency eddy current type electric heater as claimed in claim 2 is characterized in that described drive circuit adopts the PWM drive circuit.
4. immediate heating type high-frequency eddy current type electric heater as claimed in claim 3 is characterized in that described PWM drive circuit adopts the UC3846 type.
5. immediate heating type high-frequency eddy current type electric heater as claimed in claim 2 is characterized in that described single-chip microcomputer adopts AVR single-chip microcomputer Mega16L.
CN201310025413.0A 2013-01-23 2013-01-23 Instant high-frequency vortexing type electric water heater Active CN103047750B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107176143A (en) * 2017-06-09 2017-09-19 青岛理工大学 A kind of Novel steam car washer
CN107482792A (en) * 2017-08-11 2017-12-15 中惠创智(深圳)无线供电技术有限公司 Wireless power water heater
CN108489105A (en) * 2018-02-02 2018-09-04 广东美智智能科技有限公司 A kind of electricity wall-hung boiler Poewr control method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2224368Y (en) * 1994-11-04 1996-04-10 贺贵腾 Electromagnetic water-heating device
JPH0989368A (en) * 1995-09-28 1997-04-04 Matsushita Electric Ind Co Ltd Boiler for bath
CN2487998Y (en) * 2001-05-31 2002-04-24 陈发旺 Electromagnetic heating type water heater
CN101029749A (en) * 2006-09-28 2007-09-05 董道法 High-frequency household electric heater and water heater
CN101178250A (en) * 2007-11-29 2008-05-14 江南大学 Induction heating rapid water heater
CN201421175Y (en) * 2009-04-17 2010-03-10 漳州市赐元塑胶有限公司 Energy-saving and instant-heating electromagnetic water heater
CN201637078U (en) * 2010-04-07 2010-11-17 孙志明 Electromagnetic water heater
CN102809219A (en) * 2012-09-05 2012-12-05 陈广龙 Low-heating electromagnetism generating method and device thereof of electromagnetic water heater

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2224368Y (en) * 1994-11-04 1996-04-10 贺贵腾 Electromagnetic water-heating device
JPH0989368A (en) * 1995-09-28 1997-04-04 Matsushita Electric Ind Co Ltd Boiler for bath
CN2487998Y (en) * 2001-05-31 2002-04-24 陈发旺 Electromagnetic heating type water heater
CN101029749A (en) * 2006-09-28 2007-09-05 董道法 High-frequency household electric heater and water heater
CN101178250A (en) * 2007-11-29 2008-05-14 江南大学 Induction heating rapid water heater
CN201421175Y (en) * 2009-04-17 2010-03-10 漳州市赐元塑胶有限公司 Energy-saving and instant-heating electromagnetic water heater
CN201637078U (en) * 2010-04-07 2010-11-17 孙志明 Electromagnetic water heater
CN102809219A (en) * 2012-09-05 2012-12-05 陈广龙 Low-heating electromagnetism generating method and device thereof of electromagnetic water heater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107176143A (en) * 2017-06-09 2017-09-19 青岛理工大学 A kind of Novel steam car washer
CN107482792A (en) * 2017-08-11 2017-12-15 中惠创智(深圳)无线供电技术有限公司 Wireless power water heater
CN108489105A (en) * 2018-02-02 2018-09-04 广东美智智能科技有限公司 A kind of electricity wall-hung boiler Poewr control method
CN108489105B (en) * 2018-02-02 2020-09-29 广东美智智能科技有限公司 Power control method for electric wall-hung furnace

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Effective date of registration: 20210524

Address after: No. 905, 9th floor, No. 86, anling 2nd Road, Huli District, Xiamen City, Fujian Province, 361000

Patentee after: XIAMEN GOOMAX ENERGY TECHNOLOGY Co.,Ltd.

Address before: Xiamen City, Fujian Province, 361005 South Siming Road No. 422

Patentee before: XIAMEN University

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Denomination of invention: Instantaneous high frequency eddy current electric water heater

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Denomination of invention: Instant heating high frequency vortex type electric water heater

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